User manual

Raisecom Technology Co., Ltd
22
4.5.3. Extended Connection Type
This series device can not be connected to fiber interface device of other vendor. But it
can be connected with remote RC802/804-60B series dual-E1 fiber optic modem module.
The device RC802-60B and RC804-60B with two E1 interface has been introduced in
section “Model Description”.
RC802-60B RC801-60B-FV35
Fiber
V.35
1
st
E1
E12
nd
E1
PBX PBX
Router
ATM
It needs to pay attention to:
1. The 1
st
E1 of RC802-60B should be connected to 1
st
tributary V.35 interface of
RC801-60B-FV35;
2. The 2
nd
E1 of RC802-60B should be connected to 2
nd
tributary E1 interface of
RC801-60B-FV35;
3. Local RC802-60B can transfer the first tributary in optical signal to G.703 E1 signal
which can be connected by E1 interface of wide network, such as ATM, SDH and etc.
In this method the V.35 data channel of RC801-60B-FV35 should using slave clock
mode (fiber resuming clock).
4. In this connection type, the E1 CRC checkout function of ATM device is commonly
disabled, but the V.35 data channel CRC checkout function of Raisecom
RC801-60B-FV35 is enabled, so please adjust their CRC property to consistent.
5. Additionally please pay attention to the choosing of PCM30/31 mode and time slot
status of E1 fractional mode.